Eric R. Von Helms

Jason leads O’Neil Cannon’s Corporate Practice Group. He advises and represents individuals, businesses, and banks on a variety of corporate, banking, and business-related issues, including mergers and acquisitions, commercial loan transactions, corporate issues, contract negotiation and preparation, and business entity selection and formation. Jason Assists Clients With Mergers and acquisitions Complex commercial loan transactions for lenders and borrowers Corporate matters, incl...

Jesse R. Dill is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management, Labor Law - Management and Litigation - Labor and Employment. Jesse R., who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jesse R. is held by other top lawyers in the same geographic and legal practice area.

Attorney Matthew Fernholz focuses his practice on commercial litigation, trust and fiduciary disputes, business torts, trade secrets, non-compete agreements, defamation, and appellate work. In addition, he has developed one of the preeminent political and election law practices in the State of Wisconsin, and has handled several high-profile matters, from representing candidates for statewide office, successfully challenging the Governor’s emergency powers, arguing before the Wisconsin E...

Phil Reid is a Shareholder in the Litigation and Risk Management Practice Group. His practice focuses solely on litigation, with a particular emphasis on asbestos and toxic tort matters, insurance coverage and the defense of commercial and personal injury claims. Phil represents both product manufacturers and insurance companies. He has tried personal injury, professional liability, insurance coverage, engineering, premises liability, employment and police liability cases. He has successfully...

Sally Piefer is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Labor Law - Management. Sally, who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sally is held by other top lawyers in the same geographic and legal practice area.

JB leads O’Neil Cannon’s Business Law Practice Group and is a United States Air Force Veteran. He works with and advises clients on a wide range of business law matters, including form of entity selection and initial capitalization, raising funds through private equity offerings, securities compliance and broker/dealer matters, mergers and acquisitions, contract preparation and negotiation, and software, technology, and IP matters. JB Assists Clients With Mergers, acquisitions, an...

Steve Botzau is the managing attorney in the firm’s Racine and Kenosha offices. He was certified as a civil trial specialist in 1997 by the National Board of Trial Advocacy and was recently selected for exclusive membership in the American Board of Trial Advocates. Steve has completed over 100 civil jury trials. Steve has been recognized as a Super Lawyer since 2005. He has been among the top 50 attorneys in the State of Wisconsin since 2011, and has been among the top 25 attorneys in t...

Danny is an equity shareholder and a member of the firm’s Board of Directors. Danny represents public and private manufacturers of products on a national basis in both commercial and product liability litigation and regulatory compliance. In addition, Danny represents construction companies and contractors in liability litigation. In this capacity, he defends wrongful death, catastrophic injury, and significant property damage cases, whether arising from fires and explosions, roll-overs...

Grant Killoran is a shareholder at O’Neil Cannon and the Past Chair of its Litigation Practice Group. He has significant and diverse trial experience representing clients in Wisconsin State and Federal Courts, and courts around the country, focusing on complex business, health care and employment law disputes. Grant also devotes a portion of his practice to arts and entertainment law, with an emphasis on the music industry. Grant is listed in The Best Lawyers in America® in the prac...

Joseph E. Tierney, III has more than forty years of experience focused primarily on tax and corporate law for businesses, owner families and individuals. He has particular experience in the design and administration of plans for very large estates, including some whose accumulated assets have totaled in the eight- and nine-figures. He has also been lead counsel in the purchase and sale of numerous businesses and has extensive experience in entity selection and structuring. Because tax consequ...